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CWE-122: Heap-based Buffer Overflow, page 7

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The product writes past the end of a buffer that was allocated on the heap.

What the weakness is: CWE-122 at MITRE

Ask an AI about CWE-122

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Show the promptExplain CWE-122: Heap-based Buffer Overflow and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/122.html and https://cve.bz/cve/cwe/122?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this weakness's id and public links.

  1. 9.8CVE-2026-83519EPSS 1.1%

    Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.

  2. 7.8CVE-2026-83518EPSS 0.4%

    Heap-based buffer overflow in RPC Runtime allows an authorized attacker to elevate privileges locally.

  3. 9.8CVE-2026-83517EPSS 1.1%

    Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

  4. 7.8CVE-2026-83514EPSS 0.4%

    Heap-based buffer overflow in Windows Partition Management Driver allows an authorized attacker to elevate privileges locally.

  5. 7.8CVE-2026-83513EPSS 0.4%

    Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

  6. 7.8CVE-2026-78459EPSS 0.4%

    Heap-based buffer overflow in Windows Internet Information Services allows an authorized attacker to elevate privileges locally.

  7. 8.8CVE-2026-77902EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

  8. 8.8CVE-2026-77496EPSS 0.9%

    Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.

  9. 8.8CVE-2026-70343EPSS 0.9%

    Heap-based buffer overflow in Microsoft MPEG-2 Video Extension allows an unauthorized attacker to execute code over a network.

  10. 8.8CVE-2026-70302EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

  11. 8.8CVE-2026-70301EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

  12. 9.8CVE-2026-70291EPSS 1.3%

    Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

  13. 8.8CVE-2026-70287EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

  14. 7.8CVE-2026-70286EPSS 0.4%

    Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

  15. 7.8CVE-2026-70285EPSS 0.4%

    Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

  16. 8.8CVE-2026-70282EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

  17. 7.8CVE-2026-70278EPSS 0.3%

    Heap-based buffer overflow in Microsoft Windows Media Foundation allows an authorized attacker to elevate privileges locally.

  18. 8.1CVE-2026-70269EPSS 0.8%

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

  19. 8.8CVE-2026-70268EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

  20. 9.8CVE-2026-70262EPSS 0.9%

    Heap-based buffer overflow in WebDAV allows an unauthorized attacker to elevate privileges over a network.

  21. 8.8CVE-2026-70258EPSS 0.9%

    Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

  22. 8.8CVE-2026-70257EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

  23. 8.8CVE-2026-70256EPSS 0.9%

    Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

  24. 7.8CVE-2026-70255EPSS 0.4%

    Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

  25. 9.8CVE-2026-70242EPSS 1.6%

    Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

  26. 7.8CVE-2026-70238EPSS 0.4%

    Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

  27. 7.8CVE-2026-70233EPSS 0.5%

    Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

  28. 7.8CVE-2026-70220EPSS 0.4%

    Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.

  29. 8.8CVE-2026-70210EPSS 0.9%

    Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to elevate privileges over a network.

  30. 7.5CVE-2026-70207EPSS 0.8%

    Heap-based buffer overflow in Network Policy Server (NPS) allows an authorized attacker to execute code over a network.

  31. 9.8CVE-2026-70157EPSS 1.1%

    Heap-based buffer overflow in Windows System Information Console allows an unauthorized attacker to execute code over a network.

  32. 9.8CVE-2026-70153EPSS 1.1%

    Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to execute code over a network.

  33. 8.8CVE-2026-70149EPSS 0.9%

    Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.

  34. 9.8CVE-2026-70147EPSS 1.1%

    Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to execute code over a network.

  35. 7.8CVE-2026-70143EPSS 0.4%

    Heap-based buffer overflow in Windows Network File System allows an authorized attacker to execute code locally.

  36. 7.8CVE-2026-70139EPSS 0.4%

    Heap-based buffer overflow in Windows Update Service allows an authorized attacker to elevate privileges locally.

  37. 7.8CVE-2026-70138EPSS 0.4%

    Heap-based buffer overflow in Windows OLE allows an authorized attacker to elevate privileges locally.

  38. 7.8CVE-2026-70132EPSS 0.4%

    Heap-based buffer overflow in Windows Portable Device File System Driver allows an authorized attacker to elevate privileges locally.

  39. 7.8CVE-2026-70131EPSS 0.5%

    Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to elevate privileges locally.

  40. 7.8CVE-2026-70123EPSS 0.3%

    Numeric truncation error in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

  41. 7.8CVE-2026-70121EPSS 0.4%

    Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

  42. 7.8CVE-2026-70117EPSS 0.4%

    Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

  43. 7.8CVE-2026-70114EPSS 0.4%

    Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

  44. 7.8CVE-2026-70112EPSS 0.4%

    Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code locally.

  45. 7.8CVE-2026-70109EPSS 0.5%

    Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to elevate privileges locally.

  46. 7.8CVE-2026-70108EPSS 0.5%

    Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

  47. 7.8CVE-2026-70106EPSS 0.5%

    Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

  48. 7.8CVE-2026-70103EPSS 0.4%

    Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

  49. 9.8CVE-2026-70096EPSS 1.1%

    Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.

  50. 7.5CVE-2026-70095EPSS 0.6%

    Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a network.